Internal-combustion engines – High tension ignition system – Multiple spark ignition system
Patent
1985-11-01
1987-03-31
Cox, Ronald B.
Internal-combustion engines
High tension ignition system
Multiple spark ignition system
123636, F02P 100
Patent
active
046534598
ABSTRACT:
The energy transfer derived from the ignition spark in the first or breakdown phase of a sparking event is matched to the speed of propagation of the ignition or flame front within the combustion chamber of an internal combustion engine (ICE) 11. The number of spark flash-overs or breakdowns is made dependent on the conditions of the combustible mixture applied to the ICE, for example by providing signals representative of the mixture by sensing fuel and air throughput, as well as, preferably, speed, loading, and temperature of the engine. The so derived data are associated with numbers of spark breakdowns or flash-overs resulting in optimum combustion; the course of combustion itself can be sensed, for example, by a pressure, light or ion current sensor coupled to the combustion chamber, and the resulting combustion event compared with stored data in the memory which, then, provides output signals to a function generator to associate any derivation from optimum combustion with a number of spark breakdown occurrences to establish optimum combustion conditions.
REFERENCES:
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patent: 3926557 (1975-12-01), Callies
patent: 3945362 (1976-03-01), Snow
patent: 3983461 (1976-03-01), Jordan
patent: 4091787 (1978-05-01), Frank
patent: 4112898 (1978-09-01), Manger
patent: 4341195 (1982-04-01), Nishio et al.
patent: 4428349 (1984-01-01), Neumann
Cox Ronald B.
Robert & Bosch GmbH
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